fix container names

host_vars/verwaltung

@@ -66,7 +66,7 @@ alert:
     warn: 5
     crit: 10
   containers:
-    - { name: "dockerstats_app-1" }
+    - { name: "dockerstats-app-1" }
     - { name: "gitea-app-1" }
     - { name: "gitea-db-1" }
     - { name: "jameica-vnc-ldap-auth-1" }